Your Body Isn't as Old as You Think

by
DEBORAH DAY Aug. 14, 2017

Deborah Day

Deborah Day is a lifestyle and entertainment writer and editor. Former editor in chief of Maxim.com and executive editor of Premiere.com, she has been published on EW.com, TheWrap.com, Yahoo.com, LAmag.com and other media sites, as well as in Maxim, Interview and Time Out NY magazines.

The pieces and parts that make up your body update at different paces. In a race, your stomach lining wins, being replaced every two to nine days; while the lens of your eye and most of your brain are the same as when you were born.

Video of the Day

NPR's science blog Skunk Bear team produced a handy 3-minute video, "How Old Is Your Body, Really?" hosted by reporter Adam Cole to help explain how these processes take place:

"Certain parts of your brain add a few new neurons over the course of your life," Cole explains, "but the vast majority of your neurons developed before you were born. It's the connections between those neurons -- the circuits that store memories -- that are constantly changing."